FWNuke
Fledgling Freddie
- Joined
- May 4, 2010
- Messages
- 136
Once you get it moving how difficult is it to keep it moving? Noone's disputing that they'll be an initial amount of energy needed to get the wheels rolling, the only way round that would be to have frictionless bearings, but once you've got past that point (which requires a tiny fraction of the power put out by the plane's engine) then the wheels have no further impact.
As i've said above friction plays a tiny role at the start when the wheels actually start rolling but once you've got past that frictional force then the wheels are of no consequence.
There is still friction in a moving wheel.